Abrading – Frame or mount – Portable abrader
Reexamination Certificate
2005-11-22
2005-11-22
Wilson, Lee D. (Department: 3723)
Abrading
Frame or mount
Portable abrader
C451S119000, C451S124000, C051S302000
Reexamination Certificate
active
06966825
ABSTRACT:
This invention discloses a large-scale wall polisher that is operated by a single operator and applicable to polish different rooms, external walls, and ceilings and with dust absorption and positioning functions; in addition, as a complement to the large-scale machine, this invention also provides a handheld mini wall polisher that has dust absorption and positioning functions. This invention is convenient and practical, and is applicable to chisel worn walls and polish new walls; It achieves polishing automation reduces labor intensity, and enhances work efficiency; moreover, it can also enhance the esthetic appearance of polished walls.
REFERENCES:
patent: 2049935 (1936-08-01), Woodward
patent: 2670577 (1954-03-01), McDonough
patent: 2755606 (1956-07-01), Ronvold et al.
patent: 3439372 (1969-04-01), Collier
patent: 3948005 (1976-04-01), Whitsett
patent: 4123877 (1978-11-01), Pere
patent: 00114111 (2000-03-01), None
patent: 1396041 (2003-02-01), None
patent: 1445425 (2003-10-01), None
Knobbe Martens Olson & Bear LLP
Ojini Anthony
Wilson Lee D.
LandOfFree
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